項目有需求需要判定字符串中是否包含表情包，于是百度，google啥手段都用盡了，試了一個又一個的方法，最后發(fā)現(xiàn)下面這段代碼靠譜點
- (BOOL)stringContainsEmoji:(NSString *)string{
__block BOOL returnValue = NO;
[string enumerateSubstringsInRange:NSMakeRange(0, [string length])
options:NSStringEnumerationByComposedCharacterSequences
usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
const unichar hs = [substring characterAtIndex:0];
if (0xd800 <= hs && hs <= 0xdbff) {
if (substring.length > 1) {
const unichar ls = [substring characterAtIndex:1];
const int uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;
if (0x1d000 <= uc && uc <= 0x1f77f) {
returnValue = YES;
NSLog(@"%@",substring);
[self changeToString:substring];
}
}
} else if (substring.length > 1) {
const unichar ls = [substring characterAtIndex:1];
if (ls == 0x20e3) {
returnValue = YES;
}
} else {
if (0x2100 <= hs && hs <= 0x27ff) {
returnValue = YES;
} else if (0x2B05 <= hs && hs <= 0x2b07) {
returnValue = YES;
} else if (0x2934 <= hs && hs <= 0x2935) {
returnValue = YES;
} else if (0x3297 <= hs && hs <= 0x3299) {
returnValue = YES;
} else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50) {
returnValue = YES;
}
}
}];
return returnValue;
}
然后美滋滋的去實驗，結(jié)果發(fā)現(xiàn)很多新出的emoji都不能識別出來，估摸著是emoji判定的范圍的不對。就想著更新最新的emoji的unicode碼范圍。
用control+command+空格彈出字符檢視器，就能看到系統(tǒng)自帶的emoji，但是現(xiàn)在還看不到emoji的unicode碼。點擊左上角的設(shè)置圖標
截屏2020-06-04 下午4.50.23.png
選擇自定列表，然后一直往下拉，勾選代碼表里的Unicode
截屏2020-06-04 下午4.51.56.png
完成后，返回再點擊隨意一個emoji表情，在右側(cè)就有該emoji的unicode碼了。
截屏2020-06-04 下午4.53.04.png
再然后就是茫茫多的去比對unicode值了。最后更新最后的結(jié)果代碼
- (BOOL)isContainEmoji {
__block BOOL containsEmoji = NO;
[self enumerateSubstringsInRange:NSMakeRange(0,[self length])
options:NSStringEnumerationByComposedCharacterSequences
usingBlock:^(NSString *substring,
NSRange substringRange,
NSRange enclosingRange,
BOOL *stop) {
const unichar hs = [substring characterAtIndex:0];
// surrogate pair
if (0xd800 <= hs && hs <= 0xdbff) {
if (substring.length > 1) {
const unichar ls = [substring characterAtIndex:1];
const int uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;
if (0x1d000 <= uc && uc <= 0x1FAD6) {
containsEmoji = YES;
}
}
}else if (substring.length > 1) {
const unichar ls = [substring characterAtIndex:1];
if (ls == 0x20e3 ||
ls == 0xfe0f ||
ls == 0xd83c) {
containsEmoji = YES;
}
} else {
// non surrogate
if (0x2100 <= hs && hs <= 0x27ff) {
containsEmoji = YES;
if (0x278b <= hs && hs <= 0x2792) {
containsEmoji = NO;
}
}else if (0x2B05 <= hs && hs <= 0x2b07) {
containsEmoji = YES;
} else if (0x2934 <= hs && hs <= 0x2935) {
containsEmoji = YES;
}else if (0x3297 <= hs && hs <= 0x3299) {
containsEmoji = YES;
}else if (hs == 0xa9 ||
hs == 0xae ||
hs == 0x303d ||
hs == 0x3030 ||
hs == 0x2b55 ||
hs == 0x2b1c ||
hs == 0x2b1b ||
hs == 0x2b50) {
containsEmoji = YES;
}
}
if (containsEmoji) {
*stop = YES;
}
}];
return containsEmoji;
}
更新至iOS14.2 emoji 13.0
如有問題，請?zhí)岢鲋附?/p>
